CHARLOTTESVILLE, Va. — A Baltimore Ku Klux Klan leader who authorities say fired a gun during a white nationalist rally in Charlottesville is in custody in Virginia awaiting a court appearance this week.

Richard Wilson Preston is charged with discharging a firearm within 1,000 feet of a school on Aug. 12, the day of the rally that descended into violent chaos.

The American Civil Liberties Union said it provided law enforcement officials with a video of the shooting before Preston’s arrest. It shows a man yelling and firing a handgun one time while standing on a crowded sidewalk. No one was struck.

The 52-year-old Preston told The Baltimore Sun he is being misrepresented as a violent racist. Preston says went to Charlottesville as a member of a militia intending to protect rally participants.